package com.qk.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qk.common.utils.JwtUtils;
import com.qk.dto.UserDto;
import com.qk.common.PageResult;
import com.qk.entity.User;
import com.qk.exception.BusinessException;
import com.qk.mapper.UserMapper;
import com.qk.service.UserService;
import com.qk.vo.LoginResultVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


@Slf4j
@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;
    @Override
    public PageResult<User> list(UserDto userDto) {
        PageHelper.startPage(userDto.getPage(), userDto.getPageSize());
        List<User> userList =  userMapper.selectList(userDto);
        Page<User> p = (Page<User>) userList;
        return new PageResult<>(p.getTotal(), p.getResult());
    }

    @Override
    public  void add(User user){
        // 补全基础属性
        user.setCreateTime(LocalDateTime.now());
        user.setUpdateTime(LocalDateTime.now());

        //设置默认密码
        String password = user.getUsername() + "123";
        user.setPassword(DigestUtils.md5DigestAsHex((user.getUsername()).getBytes()));//md5加密

        //调用mapper
        userMapper.insert(user);
    }

    @Override
    public void deleteByIds(List<Integer> ids) {
        userMapper.deleteByIds(ids);
    }

    @Override
    public User getUserById(Integer id) {
        return userMapper.selectById(id);
    }

    @Override
    public void updateUser(User user) {
        user.setUpdateTime(LocalDateTime.now());

        user.setPassword(DigestUtils.md5DigestAsHex((user.getUsername()+"123").getBytes()));
        userMapper.update(user);
    }

    @Override
    public List<User> listByRoleLabel(String roleLabel) {
        return userMapper.listByRoleLabel(roleLabel);
    }

    @Override
    public List<User> listByDeptId(Integer deptId) {
        return userMapper.listByDeptId(deptId);
    }

    @Override
    public LoginResultVo login(User user) {
        //调用mapper接口查询用户
        User u = userMapper.selectByUsername(user.getUsername());
        //判断用户是否存在
        if(u == null){
            log.info("用户不存在:");
            throw new BusinessException("用户或密码错误");
        }
        //判断密码是否正确
        String _pass = DigestUtils.md5DigestAsHex(user.getPassword().getBytes());
        if(!_pass.equals(u.getPassword())){
            log.info("密码错误:");
            throw new BusinessException("用户或密码错误");
        }
        //判断状态是否正确
        if(u.getStatus() != 1){
            log.info("用户状态错误:");
            throw new BusinessException("用户已停用");
        }
        //封装结果并返回
        LoginResultVo loginResultVo = new LoginResultVo();
        loginResultVo.setId(u.getId());
        loginResultVo.setUsername(u.getUsername());
        loginResultVo.setName(u.getName());
        loginResultVo.setImage(u.getImage());
        loginResultVo.setRoleLabel(u.getRoleLabel());

        Map<String, Object> claims = new HashMap<>();
        claims.put("id", u.getId());
        claims.put("username", u.getUsername());
        String jwt = JwtUtils.generateToken(claims);
        loginResultVo.setToken(jwt);

        return loginResultVo;
    }

}